High-Intent Blog Topic Ideas (how many are really possible?)

I work with a client to help run their blog, and lately I feel like I don't know what I'm doing.

I started with them as just a content writer, following briefs, and over time that has evolved and I'm now responsible for running their blog (keyword research, topic brainstorming, assigning/writing/editing/publishing).

The thing is, lately in particular they've been hyper-focused on low-funnel, high-intent topics. They want blogs on topics that will produce conversions, and the data shows that these are mainly listicle-style articles that include their business as one of the solutions.

I've been tasked to explore new potential keyword paths and blog topic ideas within this area and to pitch these new ideas, but I feel kind of at a loss. It seems to me that these ultra high-intent articles are finite, and we've already published quite a few. I feel like everything I look into now is either a very weak keyword, only marginally related to what the business provides, or it will begin to compete with other similar articles already published on the blog.

Am I missing something here? Do I need to be looking at this from a different persective?